Trump threatened during the campaign to scrap the deal. Brennan said doing so would strengthen hardliners in Iran and possibly spur other countries to pursue nuclear weaponry.

The CIA director also suggested Trump should be wary of promises made by Russia because of Russia's past failure to deliver.

'I Had To Do It': Dylann Roof's Confession Played at Trial

A taped confession played for jurors at Dylann Roof's trial shows the accused killer of nine people laughing and confessing to the murders. "I did it," he said in the tape played on Dec. 9, 2016. "I had to do it." (Published 3 hours ago)

He said Russia and the Syrian regime are responsible for the horrendous humanitarian situation facing Syrian civilians.